174 Memoir Sears Foundation for Marine Research 



Postorbital: distance 1 3-3-1 5-3- Scales: ca. 39-42. 



Maxillary: length 19.2-22.5. Gill rakers: 13-15+ 15-17 (rarely 18). 



Mandible: length 18.5-20. Fin rays: dorsal 13-15; anal 26-28 

 Anal fin: length of base 25-29.3. (rarely 25 or 29); pectoral 12 or 13. 



Pectoral fin: length 1 3.9-1 6.6. Vertebrae: 43 (3 specimens). 



Body slender, moderately compressed, its depth 4.75-5.5 in SL. Head 3.5—4.0 

 in SL, its depth equal to its postorbital length and about half of eye. Snout pro- 

 jecting about 66 "/o of its length beyond tip of mandible, 5.0-6.0 in head. Eye 3.5- 

 4.25. Postorbital 1.65-2.0 in head. Maxillary long and pointed, its upper margin 

 straight, reaching nearly or quite to margin of opercle, i.i— 1.35 in head. Mandible 

 1. 2-1. 4. Cheek equal to, or a little longer than, eye and 75 "/o of snout, its posterior 

 angle rather sharp, about 40°. 



Dorsal fin with the longest rays reaching well beyond tip of last ray if deflexed, 

 its origin about equidistant between base of caudal and anterior margin of eye. Anal 

 fin with origin under beginning of second fourth of dorsal, its base 3.4—4.0 in SL. 

 Pelvic inserted somewhat nearer to base of pectoral than to origin of anal. Pectoral 

 falcate, sometimes failing to reach base of pelvic by diameter of pupil, occasionally 

 reaching nearly to base of pelvic, the first (uppermost) ray generally as long as the 

 second and about twice the last ray, 1.5-1.9 in head. Axillary scale of pectoral 

 scarcely reaching beyond midlength of pectoral, 3.0-3.5 in head. 



Color. In alcohol, pale. Side of head silvery. Silvery lateral band bright, about as 

 wide as eye. 



Range and Habitat. The range extends from the Florida Keys, where it is appar- 

 ently rather rare, to Cuba, Yucatan, and British Honduras. The specimens examined 

 were apparently taken in shallow water, near the shore. 



Synonyms and References: 



StolepAorus mitchilU Bean, Bull. U. S. Fish Comm. (1888), 8, 1890: 206 (Cozumel I., off Yucatan, Mexico; 



specimens re-exam, and found to be A. cayorum). 

 Anchovia choerostoma cayorum Fowler, Proc. Acad. nat. Sci. Philad., ^8, 1906: 85, fig. 4 (orig. descr.; type local. 



Mailer's Rock, Florida Keys; type ANSP 30613). 

 Anchovia cayorum Fowler, Proc. Acad. nat. Sci. Philad., 6j, 191 1 : 219 (types relisted). 

 Anchoviella cayorum Jordan, Evermann and Clark, Rep. U. S. Comm. Fish. (1928), 2, 1930: 49 (synon.). 

 Anchoa cayorum Hildebrand, Bull. Bingham oceanogr. CoU., 8 (2), 1943: 50, fig. 17 (synon., descr., relation., 



range, type material re-exam.). 



Anchoa pectoralis Hildebrand 1 943 



Study Material. Only the type material, 64 specimens, 43-65 mm TL, from 

 Vigia, Brazil, MCZ 18004, listed for "Brazil, Louis Agassiz." 



Distinctive Characters. This species is closely related to A. mitchilli diaphana, 

 A.parva, and A. januaria^ from all of which it differs in the more numerous pectoral 

 rays. Other differences are evident in the descriptions and tables. 



